Thanks for your question! This is meant to work with a M6 bolt. Yes this is for use with 7/8" bars. Please let us know if there is anything else we can assist you with.

Answered on 2/25/2013 by Anonymous

Q:

The picture appears to be of two different styles, in one the 10mm bolt hole is parallel to the mounting holes and the other style has the 10mm bolt hole perpendicular to the mounting holes. Is this difference dictated by the color choice which is black vs. aluminum? Or what?